Separator.



K. & A. WRD.

SEPABATOB.

APPLICATION FILED MAR. 17, 1908.

1,052,777. Patented Feb.11,1913.

KARL WARD AND ALBERT WRD, or s'rocKHoIlM, SWEDEN.

SEPARATOB.

Specification of Letters Patent.

Patentedreb. 11, i913.

Application filed March 17, 1908. Serial No. 421,699.

To aZ-l whom; it may concern.'

Be it' known that We, KARL lVim and ALBERT WRD, mining engineers,'subjects ofvv Sweden, 'residingat 39 Odengatan, Stoc holm,` Sweden,` have invented new and useful Improvements in Separators, of which the following is a specification.

The present invention relates to an apparatus Afor asserting solid particles as to their specific' gravity or size, or in 'otherwords,

separating and classifying them.

The apparatus is adapted-for introducing a fluid containing the particles into one or more passages (separatingpassages) rotating about an axis', through which passages the said fluid is forced outward against a surrounding chamber containing a fluid of a pressure sufficient to preventthe fluid first mentioned and a larger or'smaller portion of the solid particles from being flung out into the outer chamber, theQsolid particles thus being assorted as to ltheir specific grav.- ity or lsize and an actual classification being accomplished.

The accompanying drawing shows a longitudinal section of a separator with a horizontal axis and intended for separating and classifying solid particles, contained inl a lfluid as to their specific gravity or size; in this machine the chamber surroundingthe system of passages isLnot stationary but partake's in the rotation'.

The apparatus thus illustrated com-prises .a closed receptacle-93. which is shown as rotating, and a lrotating element therein. In said lrotating element different radial passages or channels are arranged, viz., separating channels 111` which discharge at the periphery of the element-'into the surrounding receptacle, supply channels V18 leading from a hollow shaft portion 19 to the inner ends of said separating channels, discharge i, channels 16 leading from the inner ends of the channel 14 to another hollow shaft portion 20 .and finally channels 13 discharging into the outer ends of the channels 1G and leading from an-anniilai -channel 96 sur rounding the shaft portion 20. The said annular channcl` 96 Vcommunicates with a stationary supply pipe 98, which is fed from a pump and ldischarges into. a stufling box 100. Through channels or passages 91, the

annular channel 96 communicates with the peripheral portion of the receptacle 93, which in turn through passages communicates with another annular-channel 97.- siiriounding the shaft portion 19. 1 This channel 97 through a stulling box 10`1^colm municates with a stationary discharge pipe 99.

`The classification of solid particles ccording to their specific gravity or size by carried out in the following manner: While keeping the whole rotary system rotating at a convenient'speed a fluid carryin' in suspension the solid particles to be classified is introduced at the left end of the machine through the hollow-shaft 19. At the same time, a fluid is introduced by means of the `means of the apparatus-just described is pump above referred to through the pipe .98

into the annular channel 96. A portion of this fluid passes through the passages 91 into the peripherahportion of the recep- I tacle 93 where it assumes a pressure de` pending partly on the pressure under which it is introduced by the pump, partly ou the speed of rotation. VAnother portion of the said fluid enters the channels 13. The

fluid introduced through the :hollow shaft portion V19 passes outward throughv the channels 18 into the vchannels 14. vThe i pressure of the fluid in the receptacle 93 as well as in the channels 13 is sufficiently; high not only to prevent anyvfluidV from the channels 14 from passing into said recep- 'tacle' or channels, but even to force sonic fluid to take the opposite way, viz.,.-from the receptacle 93 and channels 13 into the channels 14E.A Of the solid particles suspended in the fluid in the last mentioned channels, some, however, are large and heavy enough to pass, under the action of the centrifugal force, outward against the just named currents of fluid into the surrounding recep- .tacle 93, while the smaller or lighter parti cles are preventedby the fluid from taking this way. These particles therefore will remain in thefluid in the channels'14 which fluid under the act-ion of the currents from the outside and from the channels 13 will be forced inward through the channels 16 and passes away through the hollow shaft portion 20 to any suitable place where the aforesaid smaller or lighter solid particles will be allowed to settle. The larger or heavier particles which' have'been ejected into the receptacle 93, on the contrary, are carried forth by the current ofV fluid coming from the passages 91 into the passages 95 and from there through the' annular passage 97, bow 101 and stationary pipe 99 to any suitable settling place. Y

Having now particularly described and ascertained the nature vof our said'invention and in what manner 'the same is to' he perl formed, we declare that we claim:

In combination a closed receptacle, a lrotating element .thereinvprovided with one or more loutwardly" extending separating channels opening int-o saidreceptacle', means for supplying' material to be separated to the inner ends ofsaid channels, said element having passages for supplying a separating fluid to'said l'channels' vnear the -outer ends'l thereof, and means for maintaining a luid pressure in the receptacle sufficient to allow the 'passage-of onlythe heavier .material thereinto, and means for separately dis charging the lighter'material` In testimony whereof We have signed our names to this specification in the presence of two subscribing Witnesses.

' KARL WRD.

ALBERT WR-D. W'itnesses:

JOHN EUBERG, BIRGER NORDFELDT. 

